Improvement in evaporating apparatus



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Letters Patent No. 108,701, dated October 25, 1870.

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aww- IMPRovEMENT iN EvAPoRA-riNG APPARATUS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom 'it may concern:

Bc it known that I, SAMUEL D. GILsoN, of the city of Syracuse, 'county of Onondaga and State of lNew York, have invented a new and useful Improvement in Evaporat'ors; and Ido hereby declare the following is a full, clear, and sufficient description of the same so as to enable any one skilled in the art to make, construct, and use the same, reference being had to the annexed drawing forming a part of this specification, in which drawing- Figure 1 is an end view, partly in section, of the de- I vice, illustrative of myinvention.

, Figure 2 is a side view thereof, partly in section.

Figure 3 is a perspective view. Figure 4 is a view of one of the dipping-pipes, to be hereinafter referred to.

Similar letters of reference indicatecorresponding Aparts in the several figures.

Notare and Object of this' Invention.

Heretofore, the most successful methodffor making salt hasbeenxto evaporate the brine either in a series .of kettles or shallowfreservoir by solar evaporation.

This is the most economical and best method at present in use, but'is uncertain in its results asto time, it being wholly dependent upon the diy stateof 'the atmospliere. The boiling process or 'method is to some extent more certain in its results, but is unreliable, not removing the impurities that exist in the.b1ine,.and which, by overheating, forms incrustations upon the kettles, which, owing tothe diiiiculty experienced in removing the same/,cause great delay, labor, and expenditure of heat, thus increasing the cost of fuel and waste of salt by -such incrustation.

To overcome the uncertainty of the solar and.. the

imperfections of the present artificial method, is thel object of my invention; and, to this end,

My invention consists* First, in a rotary evaporating steam-cylinder, revolving in or over a suitable reservoir;

Second, formingv an 'aperture in the cylinder for the purpose of discharging condensed steam;.

Third, locating above or providing the rotating cyllj inder or cylinders with dripping-pipes;

Fourth, the employment of a knife or scraper, movable or stationary, for scraping off any substance that may adhere to the cylinder; and` Fifth, 'the general vcombination o f a rotating cylinder or steam-chamber with a reservoir and scraper or knife, all of which will hereinafter more fully be described.

I prepare a steam-boiler of desired capacity, and-connect the same with a lsteam-chamber or cylinder, either dressed or undressed, which' rotates, or is otherwise partly immersed. This chamber is provided with dripping-pipes, to further economize the heat, thus uniting both the solar and artificial mode of evaporation.

In this connection I employ a scraper or knife, or

any other suitable device, which acts upon the periphery of the hollow steam-chamber or cylinder, tocleausc o the residuum from the evaporating suiface dry, or

otherwise, as desired.

One or more hollowsteam-chambers or cylinders may be used. The rstseries may be heated with the esca infr'steain or heat' escapinnr from the fire-duc or l P a o i both the escaping steam from the principal cylinders and heat from the. re flue.

' By this method the brine is partially evaporated by the first cylinder or cylinders suflicient `to precipitate theA lime, magnesia, and other impurities, while the Scrapers or knives remove all impurities that adhere to the'surface of the steam-heated cylinders, in Suthcient quantities to precipitate them to the bottom of the evaporating-pan or reservoir.` Then above all this sediment the brine may be drawn to the second Series of chambers or cylinders, where the evaporation may be completed, and the dry salt or other residuum of liquids may be removed from the surface by scraping with a knifeor other suitable device, and thus complete the manufacture of salt, without overheatingor incrustation, thus removing all impurities now more or less contained in `the manufacture of salt.

General Description.

In thc drawingl A may represent an evaporating-pan;

O, the'hollow cylinder;

.M M, the stuffing-boxes;

D, the steam-passages ;v-

H, openings in the cylinder;

E E, the dripping-pipes;A

'F F, brackets support-ing the pipes and hollow cylinder; and

G, the movable or stationary scraper or knife.

A is the evaporating-pan or reservoir, formed of suitable materal, and is made preferably of a square formation',- and so arranged as to admit the ingress of brine or other liquid to be manufactured. l

Formed with this vevaporating-pan or reservoir, or firmly secured, to it by bolts or screws, a a al a, ai'e 'brackets or pedestals, F, which are provided with openings, b b, forming bearings for the journals of the hollow steam-cylinder G, hereinafter mentioned.

b b represent a series of openings formed in the top part of the bracket or pedestals F, which form bearings or supports for a series of dripping-pipes, E E E E.

The part of the bracket or pedestal forming the bearings for the journals ofthe hollow steam-cylinder is made much stouter than the top part supporting the dripping-pipes, so as to reliably sustain the cylinder 0.

f O'is a hollow metallic cylinder, formed with journals having their bearings in the bracket or pedestal F, and which rotates in or over the reservoir or evaporatingpan A.

'Y The journalsformed with the hollow cylinder are provided with screw-threads at either end, so as to receive stufling-boxes N N which arc likewise provided with scrcw-thremls, and operate together as a nia-lc and female screw. v

D is a passage formed in the stuffing-boxes and journals of the cylinder, so as to allow steam to pass from a steam-boiler into or through the hollow cylinder C. This cylinder C rotates upon its journals in or over the reservoir or evaporatng-pan A, and is formed or provided wit-h an opening or outlet, H, for the purpose of discharging thewater collected therein Vowing to condensation of the steam.

E E E are hollow dripping-pipes, formed with a suitf able slot or opening extending more or less the ent-irc length ofthe pipes, fully shown in fig. 4. These pipes have Atheir bearings in the bracket or pedestal F, and are arranged around the top part or surface of the hollow steam-cylinder, outof immediate contact with said cylinder, in such a manner as to drip the liquid from' a reservoir evenly, and at proper 'distances upon the This knife or scraper may either be formed with the cvaporating-pan, attached to it by screws or bolts, or maybe hinged or hung loose-ly upon arms, 1) 11, formed or otherwise secured to the sides or framing of the pan.

Having thus described my invention,

What I claim as new, and desire to secure by ters Patent, is

1. .lhe hollow dripping-pipes, formed with a slot or opening, and operating substantially as described.

2. 'lhc hollow rotary evaporating steam-chamber or cylinder,lprovided with an opening, H, for the passage ofI condensed steam, substantially as described, for the purpose set forth.

Let-

cornbination with an evaporating-pan or reservoir, substantially as described.

dressed or undressed revolving steam-cylinder, substantially as set forth.

inder C, in combination with the evaporating-pan or reservoir A and the knife G, substantially as described. The above signed by me this 11th day of May, 1870.

' v SAM. D. GILYSON.

Witnesses:

J. A. NOTTINGHAM, SIMEoN LUCE.

3. A hollow rotary steain-evaporating cylinder, in'

4. The combination of a knife or scraper with aV 5. 'lhe-dripping-pipcs E E, steam-chamber or cylf 

